An electromagnetically controlled methanol delivery pump

Abstract

The present invention discloses an electromagnetically controlled methanol delivery pump, which includes an oil inlet connector, a plunger valve component, a one-way valve component, an electromagnet component and an oil outlet connector. The plunger valve is opened and closed by electromagnetic force, and the one-way valve component is used to control the flow of methanol fuel into the parking heater. The methanol delivery pump of the present invention is controlled by electromagnetic force, which is convenient for automatic control. In addition, the present invention has the advantages of simple structure and convenient maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of methanol delivery pumps, and in particular to an electromagnetically controlled methanol delivery pump. Background Art

[0002] Methanol gasoline vehicles are more difficult to cold start than gasoline vehicles, especially those with a high proportion of M85 and M100 methanol fuel. There are two reasons for the difficulty in cold starting methanol fuel vehicles. One is that the volatile temperature of methanol fuel is higher than the volatile temperature of light components in gasoline; the other is the latent heat of vaporization. The latent heat of vaporization of methanol fuel is much greater than that of gasoline. When methanol fuel enters the engine cylinder, it evaporates and vaporizes to absorb a lot of heat, causing the temperature in the cylinder to drop. It has no effect on the engine whose operating temperature has reached the normal value, but it causes difficulty in starting the engine at low temperatures in cold seasons. Summary of the invention

[0003] The purpose of the present invention is to provide an electromagnetically controlled methanol delivery pump to solve the problem of cold start difficulty of existing methanol gasoline vehicles. The pump sucks methanol from the fuel tank into the parking heater, and the combustion air sucked from the surrounding environment and the methanol from the vehicle fuel tank are mixed and ignited in the combustion chamber of the parking heater, and then the coolant medium in the circulation system is heated by the combustion heat exchange principle. It can form a circulation system with the engine and auxiliary heat dissipation devices such as the radiator and defroster in the vehicle, and provide heat sources for low-temperature starting of various vehicle engines, defrosting of windshields and heating in the vehicle interior.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A solenoid-controlled methanol delivery pump comprises an oil inlet joint, a plunger valve component, a one-way valve component, an electromagnet component and an oil outlet joint, wherein the oil outlet joint is provided with an armature mounting hole, a plunger valve mounting hole, a one-way valve mounting hole and an oil outlet hole in sequence from the first end of the oil outlet joint to the second end, and the oil inlet joint is provided with an armature sealing docking hole, a throttling hole and an oil inlet hole in sequence from the first end of the oil inlet joint to the second end; the first end of the oil inlet joint is connected with the first end of the oil outlet joint through an electromagnet interference seal in the electromagnet component, the one-way valve component is installed in the one-way valve mounting hole, the plunger valve component is installed in the plunger valve mounting hole, the armature in the solenoid valve component is installed in the armature mounting hole and sleeved on the plunger in the plunger valve component, and an oil inlet spring is provided between the armature and the armature sealing docking hole; the armature The hole surface of the sealing docking hole is an inner conical surface, and the docking position between the armature and the armature sealing docking hole is provided with an outer conical surface; a radial oil hole is provided at the bottom of the plunger sleeve of the plunger valve component, and a first annular oil chamber is provided between the outer periphery of the plunger sleeve and the hole surface of the plunger valve mounting hole, the inner end of the radial oil hole is communicated with the plunger chamber, and the outer end of the radial oil hole is communicated with the first annular oil chamber; a second annular oil chamber is provided between the outer periphery of the armature and the hole surface of the armature mounting hole, and an oil storage chamber is provided between the end surface of the armature relative to the docking position between the armature and the armature sealing docking hole and the end surface of the plunger sleeve, the second annular oil chamber is communicated with the first annular oil chamber through the oil storage chamber, and the first annular oil chamber is also communicated with the armature sealing docking hole through the oil chamber between the first end of the oil inlet joint and the first end of the oil outlet joint.

[0006] In a preferred embodiment of the present invention, the electromagnet component also includes an electromagnet housing for fixing the electromagnet on the first end of the oil inlet connector and the first end of the oil outlet connector, and a wiring socket is provided on the electromagnet housing, and the pins in the wiring socket are electrically connected to the coil on the electromagnet.

[0007] In a preferred embodiment of the present invention, an adjustment pad is provided between the electromagnet housing and the first end of the oil outlet connector to adjust the size of the oil cavity between the first end of the oil inlet connector and the first end of the oil outlet connector, thereby adjusting the stroke of the armature.

[0008] In a preferred embodiment of the present invention, an oil filter is provided in the oil inlet hole of the oil inlet connector.

[0009] In a preferred embodiment of the present invention, the one-way valve component includes an oil outlet spring, a steel ball and a skeleton oil seal, and an oil hole is arranged in the skeleton oil seal; a skeleton oil seal mounting hole is arranged at the end of the plunger sleeve adjacent to the one-way valve component, and the skeleton oil seal is installed in the skeleton oil seal mounting hole by an interference fit, the oil hole in the skeleton oil seal is connected to the plunger cavity in the plunger sleeve, and a sealing cone surface matching the steel ball is arranged at the end of the oil hole adjacent to the steel ball, one end of the oil outlet spring acts on the steel ball, and the other end acts on the oil outlet joint, and the oil outlet spring pushes the steel ball against the sealing cone surface in the skeleton oil seal to achieve sealing.

[0010] In a preferred embodiment of the present invention, an O-ring is provided on an end surface of the plunger close to the oil inlet joint.

[0011] In a preferred embodiment of the present invention, the oil inlet connector is connected to the oil tank through an oil pipe, and the oil outlet connector is connected to the parking heater through an oil pipe.

[0012] Due to the adoption of the above technical solution, the methanol delivery pump of the present invention adopts electromagnetic force control, which is convenient for automatic control. In addition, the present invention also has the advantages of simple structure and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the scope of the embodiments.

[0014] Figure 1 It is a cross-sectional view of the electromagnetically controlled methanol delivery pump of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] See also Figure 1 The electromagnetically controlled methanol delivery pump shown in the figure includes an oil inlet connector 13, a plunger valve component, a one-way valve component, an electromagnet component and an oil outlet connector 1. The second end of the oil inlet connector 13 is connected to the oil tank through an oil pipe, and the second end of the oil outlet connector 1 is connected to the parking heater through an oil pipe.

[0017] The oil outlet connector 1 is provided with an armature mounting hole 1a, a plunger valve mounting hole 1b, a check valve mounting hole 1c and an oil outlet hole 1d in sequence from the first end to the second end of the oil outlet connector 1.

[0018] The oil inlet connector 13 is provided with an armature seal docking hole 13a, a throttle hole 13b and an oil inlet hole 13c in sequence from the first end to the second end of the oil inlet connector 13. An oil filter 14 is provided in the oil inlet hole 13c of the oil inlet connector 13.

[0019] An oil chamber 15 is provided between the first end of the oil inlet connector 13 and the first end of the oil outlet connector 1. The first end of the oil inlet connector 13 and the first end of the oil outlet connector 1 are connected by interference sealing through the electromagnet 11 in the electromagnet component, so as to ensure that the methanol fuel in the oil chamber 15 does not leak. The electromagnet component also includes an electromagnet housing 12 for fixing the electromagnet 11 on the first end of the oil inlet connector 13 and the first end of the oil outlet connector 1. A wiring socket 12a is provided on the electromagnet housing 12. The pin in the wiring socket 12a is electrically connected to the coil on the electromagnet 11.

[0020] An adjustment pad 7 is provided between the electromagnet housing 12 and the first end of the oil outlet connector 13 to adjust the size of the oil chamber 15 between the first end of the oil inlet connector 13 and the first end of the oil outlet connector 1, thereby adjusting the stroke of the armature 8.

[0021] The plunger valve component includes a plunger sleeve 5 and a plunger 6. The plunger sleeve 5 is installed in the plunger valve mounting hole 1b. A first annular oil chamber 16 is provided between the outer periphery of the plunger sleeve 5 and the hole surface of the plunger valve mounting hole 1b. A part of the plunger 6 is assembled in the plunger chamber 5a of the plunger sleeve 5, and the other part extends out of the plunger sleeve 5 and passes through the armature seal docking hole 13a and the oil chamber 15.

[0022] The armature 8 in the solenoid valve component is installed in the armature mounting hole 1a and is tightly fitted on the plunger 6. An oil inlet spring 9 is arranged between the armature 8 and the armature sealing docking hole 13a; the hole surface of the armature sealing docking hole 13a is an inner conical surface, and the docking part 8a between the armature and the armature sealing docking hole is provided with an outer conical surface.

[0023] A radial oil hole 5 b is provided at the bottom of the plunger sleeve 5 , the inner end of the radial oil hole 5 b is communicated with the plunger cavity 5 a , and the outer end of the radial oil hole 5 b is communicated with the first annular oil cavity 16 .

[0024] A second annular oil chamber 17 is provided between the outer periphery of the armature 8 and the hole surface of the armature mounting hole 1a, and an oil storage chamber 18 is provided between the end surface of the armature 8 at the end opposite to the armature and the armature sealing docking hole 8a and the end surface of the plunger sleeve 5. The second annular oil chamber 17 is connected with the first annular oil chamber 16 through the oil storage chamber 18, and the first annular oil chamber 16 is also connected with the armature sealing docking hole 13a through the oil chamber 15.

[0025] A skeleton oil seal mounting hole 5c is provided at the end of the plunger sleeve 5 adjacent to the one-way valve component. The one-way valve component is installed in the one-way valve mounting hole, and includes an oil outlet spring 2, a steel ball 3 and a skeleton oil seal 4. An oil hole 4a is provided in the skeleton oil seal 4. The skeleton oil seal 4 is installed in the skeleton oil seal mounting hole 5c by interference fit to meet the sealing requirements and ensure that the methanol fuel in the plunger cavity 5a does not leak; the oil hole 4a in the skeleton oil seal 4 is connected to the plunger cavity 5a, and a sealing cone 4b matching the steel ball 3 is provided at one end of the oil hole 4a adjacent to the steel ball 3. One end of the oil outlet spring 2 acts on the steel ball 3, and the other end acts on the oil outlet joint 1. The oil outlet spring 2 pushes the steel ball 3 against the sealing cone 4b in the skeleton oil seal 4 to achieve sealing, and the oil outlet pressure is guaranteed by the spring force of the oil outlet spring 2 acting on the steel ball 3.

[0026] The working principle of the present invention is that methanol fuel enters the oil chamber 15 of the methanol delivery pump from the oil inlet connector 13 through the oil filter 14.

[0027] When the electromagnet 11 is powered off, the oil inlet spring 9 pushes the armature 8 open and pushes the plunger 6 to the lowest end. At this time, the bottom surface of the plunger 6 and the skeleton oil seal 4 are completely in contact with each other, and the methanol fuel enters the first annular oil chamber 16 between the plunger sleeve 5 and the plunger valve mounting hole 1b through the second annular oil chamber 17 between the armature 8 and the armature mounting hole 1a.

[0028] When the electromagnet 11 is energized, the electromagnetic force overcomes the spring force of the oil inlet spring 9, driving the armature 8 and the plunger 6 to move upward to the armature seal docking hole 13a of the oil inlet connector 13. At this time, the O-ring 10 on the plunger 6 contacts the bottom of the armature seal docking hole 13a. The O-ring 10 plays a shock-absorbing and sealing role, ensuring that the armature 8 will not collide with the bottom of the armature seal docking hole 13a and preventing the methanol fuel from continuing to enter the oil chamber 15. The methanol fuel in the first annular oil chamber 16 between the plunger sleeve 5 and the plunger valve mounting hole 1b enters the plunger chamber 5a of the plunger sleeve 5 through the radial oil hole 5b of the plunger sleeve 5. At this time, the methanol fuel in the plunger chamber 5a of the plunger sleeve 5 is almost in a negative pressure state, unable to overcome the spring force of the oil outlet spring 2, and the one-way valve component is in a closed state, and the methanol fuel will not flow out. When the electromagnet is powered off again, the oil inlet spring 9 pushes the armature 8 and the plunger 6 to move downward quickly, so that the bottom of the plunger 6 compresses the methanol fuel in the plunger cavity 5a. When the methanol fuel pressure is greater than the spring force of the oil outlet spring 2 acting on the steel ball 3, the steel ball 3 moves downward to open the oil hole 4a on the skeleton oil seal 4. The methanol fuel flows into the oil outlet hole 1d in the oil outlet joint 1 through the oil hole 4a on the skeleton oil seal 4 and flows out, and enters the parking heater through the oil circuit.

Claims

1. An electromagnetically controlled methanol delivery pump, characterized in that: The invention comprises an oil inlet joint, a plunger valve component, a one-way valve component, an electromagnet component and an oil outlet joint, wherein the oil outlet joint is provided with an armature mounting hole, a plunger valve mounting hole, a one-way valve mounting hole and an oil outlet hole in sequence from the first end of the oil outlet joint to the second end, and the oil inlet joint is provided with an armature sealing docking hole, a throttle hole and an oil inlet hole in sequence from the first end of the oil inlet joint to the second end; the first end of the oil inlet joint is connected with the first end of the oil outlet joint through an electromagnet interference seal in the electromagnet component, the one-way valve component is installed in the one-way valve mounting hole, the plunger valve component is installed in the plunger valve mounting hole, the armature in the electromagnet valve component is installed in the armature mounting hole and sleeved in the On the plunger in the plunger valve component, an oil inlet spring is arranged between the armature and the armature sealing docking hole; the hole surface of the armature sealing docking hole is an inner conical surface, and the docking position of the armature and the armature sealing docking hole is provided with an outer conical surface; a radial oil hole is arranged at the bottom of the plunger sleeve of the plunger valve component, a first annular oil chamber is arranged between the outer periphery of the plunger sleeve and the hole surface of the plunger valve mounting hole, the inner end of the radial oil hole is communicated with the plunger chamber, and the outer end of the radial oil hole is communicated with the first annular oil chamber; a second annular oil chamber is arranged between the outer periphery of the armature and the hole surface of the armature mounting hole, and the end face of the armature at the end of the armature relative to the docking position of the armature and the armature sealing docking hole is connected to the plunger An oil storage chamber is arranged between the end faces of the plug sleeve, and the second annular oil chamber is communicated with the first annular oil chamber through the oil storage chamber, and the first annular oil chamber is also communicated with the armature sealing docking hole through the oil chamber between the first end of the oil inlet joint and the first end of the oil outlet joint; the electromagnet component also includes an electromagnet housing for fixing the electromagnet on the first end of the oil inlet joint and the first end of the oil outlet joint, a wiring socket is arranged on the electromagnet housing, and the pin in the wiring socket is electrically connected to the coil on the electromagnet; an adjustment pad is arranged between the electromagnet housing and the first end of the oil outlet joint to adjust the first end of the oil inlet joint and the first end of the oil outlet joint. The size of the oil chamber between the two ends is used to adjust the stroke of the armature; the one-way valve component includes an oil outlet spring, a steel ball and a skeleton oil seal, and an oil hole is arranged in the skeleton oil seal; a skeleton oil seal mounting hole is arranged at the end of the plunger sleeve adjacent to the one-way valve component, and the skeleton oil seal is installed in the skeleton oil seal mounting hole by an interference fit. The oil hole in the skeleton oil seal is connected to the plunger chamber in the plunger sleeve, and a sealing cone surface matching the steel ball is arranged at the end of the oil hole adjacent to the steel ball. One end of the oil outlet spring acts on the steel ball, and the other end acts on the oil outlet joint. The oil outlet spring pushes the steel ball against the sealing cone surface in the skeleton oil seal to achieve sealing.

2. The electromagnetically controlled methanol delivery pump according to claim 1, characterized in that: An oil filter is arranged in the oil inlet hole of the oil inlet joint.

3. The electromagnetically controlled methanol delivery pump according to claim 1, characterized in that: An O-type sealing ring is arranged on an end surface of the plunger close to the oil inlet joint.

4. An electromagnetically controlled methanol delivery pump according to any one of claims 1 to 3, characterized in that: The oil inlet joint is connected to the oil tank through an oil pipe, and the oil outlet joint is connected to the parking heater through an oil pipe.

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